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A comparison of chironomid biostratigraphy from Lake Vuolep Njakajaure with vegetation, lake-level, and climate changes in Abisko National Park, Sweden

Heinrichs, Markus ; Barnekow, Lena LU and Rosenberg, Sandra (2006) In Journal of Paleolimnology 36(2). p.119-131
Abstract
Chironomid remains from the sediment of Lake Vuolep Njakajaure reflect limnological conditions resulting from changing climate and vegetation throughout the Holocene, but do not strictly follow accepted climate trends or the vegetation history based on regional pollen and macrofossil analyses. Chironomid community changes appear to be influenced by organic nutrient input from the surrounding catchment vegetation and lake hydrology, both of which are indirectly responding to some combination of climate change, hypolimnetic oxygen concentration, and changes in basin morphology. The chironomid-based quantitative mean July air-temperature reconstruction differs from other regional quantitative records; this discrepancy is likely related to... (More)
Chironomid remains from the sediment of Lake Vuolep Njakajaure reflect limnological conditions resulting from changing climate and vegetation throughout the Holocene, but do not strictly follow accepted climate trends or the vegetation history based on regional pollen and macrofossil analyses. Chironomid community changes appear to be influenced by organic nutrient input from the surrounding catchment vegetation and lake hydrology, both of which are indirectly responding to some combination of climate change, hypolimnetic oxygen concentration, and changes in basin morphology. The chironomid-based quantitative mean July air-temperature reconstruction differs from other regional quantitative records; this discrepancy is likely related to limnological conditions particular to Lake Vuolep Njakajaure. Comparison of a northern Swedish temperature transfer function and one from western Canada reveals differences in the mean July air-temperature optima of several common taxa, suggesting that the existing conservative estimates of Holocene climate change in northern Sweden may be underestimated due to the limited temperature gradient captured by the Swedish training set. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
pollen, holocene, midge, transfer function, paleotemperature, paleolimnology
in
Journal of Paleolimnology
volume
36
issue
2
pages
119 - 131
publisher
Springer
external identifiers
  • wos:000240797600001
ISSN
0921-2728
DOI
10.1007/s10933-006-0010-x
language
English
LU publication?
yes
id
e7cf2e6a-b6ad-40a0-833c-1f883ad51d34 (old id 392661)
date added to LUP
2016-04-01 17:08:57
date last changed
2018-11-21 20:47:01
@article{e7cf2e6a-b6ad-40a0-833c-1f883ad51d34,
  abstract     = {Chironomid remains from the sediment of Lake Vuolep Njakajaure reflect limnological conditions resulting from changing climate and vegetation throughout the Holocene, but do not strictly follow accepted climate trends or the vegetation history based on regional pollen and macrofossil analyses. Chironomid community changes appear to be influenced by organic nutrient input from the surrounding catchment vegetation and lake hydrology, both of which are indirectly responding to some combination of climate change, hypolimnetic oxygen concentration, and changes in basin morphology. The chironomid-based quantitative mean July air-temperature reconstruction differs from other regional quantitative records; this discrepancy is likely related to limnological conditions particular to Lake Vuolep Njakajaure. Comparison of a northern Swedish temperature transfer function and one from western Canada reveals differences in the mean July air-temperature optima of several common taxa, suggesting that the existing conservative estimates of Holocene climate change in northern Sweden may be underestimated due to the limited temperature gradient captured by the Swedish training set.},
  author       = {Heinrichs, Markus and Barnekow, Lena and Rosenberg, Sandra},
  issn         = {0921-2728},
  language     = {eng},
  number       = {2},
  pages        = {119--131},
  publisher    = {Springer},
  series       = {Journal of Paleolimnology},
  title        = {A comparison of chironomid biostratigraphy from Lake Vuolep Njakajaure with vegetation, lake-level, and climate changes in Abisko National Park, Sweden},
  url          = {http://dx.doi.org/10.1007/s10933-006-0010-x},
  doi          = {10.1007/s10933-006-0010-x},
  volume       = {36},
  year         = {2006},
}